354 hymenoptera. 



4. Nysson trimaculatus. B.M. 



Crabro trimaculatus, Rossi, Faun. Etrus. ii. 95. 892 (?. 

 Nysson nigripes, Spin. Ins. Lig. ii. 45. 38. 



St. Fary. Hym. iii. 46. 2. 

 Nysson interruptus, Oliv. Encycl. Meth. viii. 408. 2. 

 Nysson trimaculatus, Van d. Lind, Obs. ii. 30. 2 <? $ . 



Shuck. Foss. Hym. 102. 3. 



Dahlb. Hym. Europ. i. 169. 101. 



Wesm. Hym. Foss. Belg. 77. 3. 



Hah. Britain ; Italy ; France ; Germany ; Belgium ; Sweden ; 

 Lapland; Finland. 



5. Nysson dimidiatus. B.M. 



Nysson dimidiatus, Jurine, Hym. 199. t. 10. gen. 22. 



Van d. Lind, Obs. ii. 33. 6. 



Shuck, Foss. Hym. 104. 5. 



Dahlb. Hym. Europ. i. 171. 105. 



St. Farg. Hym. iii, 49. 5. 



Wesm. Hym. Foss. Belg. 82. 6. 

 Nysson Wesmaeli, St. Farg. Hym. iii. 50. 6. 

 Nysson quadriguttatus. Spin. Ins. Lig. ii. 43? 



Hab. Britain ; France ; Germany ; Belgium. 



6. Nysson guttatus. B.M. 



Nysson guttatus, Oliv. Encycl. Meth. viii. 409. 7. 

 Shuck. Foss. Hym. 103. 4. 



Hab. Britain ; France ; Albania. 



This is probably a highly-coloured variety of the N. maculatus; 

 a still more highly-coloured example of that species is in the 

 collection of the British Museum, from Albania ; both being, in 

 all probability, varieties of N. dimidiatus. 



7. Nysson scalaris. B.M. 



Nysson scalaris, Illig. ed. Faun. Etrus. ii. 157. 

 Nysson Dufourii, St. Farg. Hym. iii. 51. 7- 

 Nysson Dufouri, Dahlb. Hym. Europ. 485. 8. 



Hab. France. 



8. Nysson epeoliformis. B.M. 



Female. Length 5i lines. — Black : the head and thorax 

 coarsely punctured ; the face and cheeks with bright silvery 

 pubescence ; on the vertex and disk of the thorax a thin auri- 



